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Finding the Fourth Proportional to 609.28, 841.76 and 579.31

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Solution

The fourth proportional to 609.28, 841.76 and 579.31 is: 800.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.28 : 841.76 = 579.31 : x
  2. Step 2: Convert to fraction form
    609.28/841.76 = 579.31/x
  3. Step 3: Cross multiply
    609.28x = 841.76 × 579.31
  4. Step 4: Simplify right side
    609.28x = 487,639.99
  5. Step 5: Solve for x
    x = 487,639.99/609.28
  6. Step 6: Final answer
    x = 800.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.